How to interact with a Smart Contract on private network using Web3.js?

0 votes

I have deployed my smart contract on private network using Mist browser and Geth. Following is my script:

if (typeof web3 !== 'undefined') {
            web3 = new Web3(web3.currentProvider);
        } else {
            // set the provider you want from Web3.providers
            web3 = new Web3(new Web3.providers.HttpProvider("http://localhost:8545"));
        }
web3.eth.defaultAccount = web3.eth.accounts[0];
var CoursetroContract = web3.eth.contract(YOUR ABI);

var Coursetro = CoursetroContract.at('PASTE CONTRACT ADDRESS HERE');
console.log(Coursetro);

Aug 21, 2018 in Blockchain by sabby
• 4,350 points
113 views

1 answer to this question.

0 votes

Once you set up infura you can use the portal URL that they return to create your provider. Edit you script and put the infura URL in the place where I wrote <your infura.io url here> and that should configure your fallback if the user doesn't have a current provider

if (typeof web3 !== 'undefined') {
            web3 = new Web3(web3.currentProvider);
        } else {
            // set the provider you want from Web3.providers
            web3 = new Web3(new Web3.providers.HttpProvider(<your infura.io url here>));
        }
web3.eth.defaultAccount = web3.eth.accounts[0];
var CoursetroContract = web3.eth.contract(YOUR ABI);

var Coursetro = CoursetroContract.at('PASTE CONTRACT ADDRESS HERE');
console.log(Coursetro);
answered Aug 21, 2018 by Christine
• 15,790 points

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